<!-- Left side column. contains the logo and sidebar -->
<aside class="main-sidebar">
    <!-- sidebar: style can be found in sidebar.less -->
    <section class="sidebar">
        <!-- sidebar menu: : style can be found in sidebar.less -->
        <ul class="sidebar-menu">
            <li class="header">导航</li>
            <li class="nav-click <#if pageName == "help">active</#if>" >
            <a href="${request.contextPath}/"><i class="fa fa-circle-o text-gray"></i><span>系统管理</span></a>
            </li>
        </ul>
    </section>
    <!-- /.sidebar -->
</aside>